Recently, I dusted off my copy of “The Computational Beauty of Nature” and started rediscovering this still wonderful book. The chapter about IFS fractals inspired me to do some experimenting with animated fractal shapes. An opportune moment to learn more about Processing! After playing with it for a few hours, I have to say, this is a wonderful programming environment for this kind of visual experiments. Virtually no boilerplate code, cumbersome project setup, etc. Just start hacking away on your ideas. Based on Java, it is not a toy language either, so all the usual data structures and OOP constructs are readily available.